More info:
November 2012 marked the tenth anniversary of Takeshi's Castle on Challenge (UK).
As you may know, the UK series ended production in 2003, with the final new episode airing on 1st January 2004. The same old episodes have been constantly repeated since.

We have planned out a nine episode series (see below), to hopefully show Challenge that a new series is possible. It would be made up of five original episodes, never before used, and four episodes comprising of games previously cut from the UK series.

If you're a fan of Takeshi's Castle and would like to finally see a new series, please take a minute to sign the petition. With enough support behind it we might finally be able to demonstrate to Challenge that a new series (of one of their most popular shows) would be hugely popular and that there's reason enough to commission it for the show's tenth anniversary in the UK.

Possible Series 5:
Using games previously cut from Challenge episodes we have put together four special "Unseen" episodes, three clip shows based on original Japanese episodes not used in the UK series previously, and two episodes which have never been seen on TV since their original Japanese broadcast.

Episode 1 (Reunion/Clip Show)(Japanese Episode 101)After no new episode for so many years, Takeshi and Tani decide to meet up to reminisce, and try to forget their differences. However, it goes wrong...
Highlights of:
Skipping StonesBlueberry HillHigh RollersRoller DerbyWipe Out

Episode 6 (Pilot)(Japanese Episode 0 - Pilot Episode)In this pilot episode of Takeshi's Castle, Tani has taken over the castle and Takeshi leads the army of contestants in an attempt to reclaim his home.
Great WallSlipped DisksDragon Lake'Sprinkler Mine Zone'Skipping StonesSquare MazeUphill GardenRopeFinal FallShow Down

Episode 7 (Best Moments Part 1)Best Moments - Part 1(Ep 128)

Episode 8 (Best Moments Part 2)Best Moments - Part 2(Ep 129)

Episode 9 (International Special)(Japanese Episode 106)To launch one final attack on the castle, Tani gathers contestants from around the world and brings them back to Japan to take on Takeshi's games.